Transposition of the great arteries is a serious but rare heart defect present at birth, in which the two main arteries leaving the heart are reversed (transposed). Transposition of the great arteries is usually detected either prenatally or within the first hours to weeks of life.
Transposition of the great arteries changes the way blood circulates through the body, leaving a shortage of oxygen in blood flowing from the heart to the rest of the body. Without an adequate supply of oxygen-rich blood, the body can't function properly and a child faces serious complications or death without treatment. Corrective surgery soon after birth is the usual treatment for transposition of the great arteries.
There are three STL files available for download segmented as seen in the video and images. These files have been zipped to save space and data transfer.
The model is provided for distribution on Embodi3D with the permission of the author, pediatric cardiologist Dr. Matthew Bramlet, MD, and is part of the Heart Library. We thank Dr. Bramlet and all others who are working to help children with congenital heart problems lead normal and happy lives.
It is distributed by Dr. Bramlet under the Creative Commons license Attribution-NonCommercial-NoDerivs. Please respect the terms of the licensing agreement. A US quarter is shown for scale in the images below.

This 3D printable model of a human heart was generated from a contrast enhanced CT scan. This model is an improvement over a prior version (here). It shows the heart with slices cut in the anatomical transverse plane. If you are interested in a heart with short-axis slices, check out my short-axis stackable slice model here.
Notches have been added to ensure the slices fit together and do not slide against each other. The model demonstrates the detailed anatomy of the human heart in exquisite detail. Each slice stacks on top of the prior slice to form a complete human heart. Individual slices show the detailed cardiac anatomy of the right and left ventricles, and right and left atria, and outflow tracts. Perfect for educational purposes. It has been validated as printable on an Ultimaker 3 Extended printer.
Technical parameters:
manifold STL (watertight)
vertices: 462576
triangles: 925800
dimensions: 15.1 x 15.2 x 10.5 cm